/*
   Copyright (c) 2011, 2012 Mizar Tools Contributors (mizartools.org)

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
/*  Contributors :
 *	2011-02-18 Marco Riccardi - initial implementation
 *  2012-04-06 Marco Riccardi - added message in DliParseException
 *
 */
package org.mizartools.dli;

import java.util.LinkedList;

public class Visible {

    private LinkedList<Integer> integerList = new LinkedList<Integer>();

	private Visible(){}

	public Visible(LinkedList<Integer> integerList) throws DliException {
		if (integerList == null){
			throw new DliException();
		}
		this.integerList = integerList;
    }

	public static Visible newInstance(String string) throws DliParseException {
		Visible visible = new Visible();
		if (string.equals("$visible")){
			return visible;
		}
		int position = string.indexOf("(");
		if (position == -1) {
			throw new DliParseException("["+string+"] is not valid in Visible");
		}
		if (!string.substring(0, position).equals("$visible")){
			throw new DliParseException("["+string+"] is not valid in Visible");
		}
		string = string.substring(position+1, string.length()-1);
		int positionComma = Utility.searchSeparationComma(string);
		while (positionComma != -1) {
			visible.integerList.add(Integer.parseInt(string.substring(0, positionComma)));
			string = string.substring(positionComma+1, string.length());
			positionComma = Utility.searchSeparationComma(string);
		}
		visible.integerList.add(Integer.parseInt(string));
		return visible;
	}
	
	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("$visible");
		if (integerList.size() != 0){
			sb.append("(");
			boolean first = true;
			for (Integer integer : integerList){
				if (first) first = false;
				else sb.append(",");
				sb.append(integer.toString());
			}
			sb.append(")");
		}
		return sb.toString();
	}

}
